Collapse/Expand code definitions not working - VS2K5, 2K8

Question

I can no longer collapse or expand code definitions in Visual Studio 2005 or 2008. Don't remember exactly when it started, so I'm stumped relating it to a plug-in or other software install. I checked Edit - Outlining - and Auto Outlining is enabled. Keyboard is OK. It will work if I navigate to the menu and toggle with the mouse. Its just the keyboard shortcuts that no longer work.

Please help, I'm lost without Ctrl + M + O.

Answer 1

Tools + Customize, Keyboard button. Rebind the keys. Ctrl + M, Ctrl + O is Edit.CollapsetoDefinitions.